Perforating device for embroidering-machines.



. Patentd July l7, I900. M. scnozuram. PERFORATING DEVICE FOR EMBBOIDERING MACHINES.

' (Application filed July 11, 1899.)

(No Model.)

Wzaarex:

NITED STATES PATENT OFFICE.

MORRIS SCHOENFELD, OF RORSOHAOH, SWITZERLAND.

PERFORATING DEVICE FOR EMBROlDERlNG-MACHINES.

SPECIFICATION forming part of Letters Patent No. 653,782, dated July 17, 1900.

Application filed July 11,1899. Serial No. 723,496. (No moclrl.)

To all whom it may concern.-

Be it known that I, MORRIS SCHOENFELD, a citizen of the United States of America, residing at Rorschach, in the Republic of Switzerland, have invented new and useful Improvements in Perforating Devices for Shuttle Embroidery-Machines, (for which I applied for a patent in Switzerland on the 5th of January, 1899; in Germany on the 27th of January, 1899; in France on the 26th of May, 1899; in Austria on the 27th of May, 1899; in Italy on the 4th of June, 1899, and in Great Britain on the 20th of June, 1899,) of which the following is a specification.

In all the perforating devices at present employed for producing open-work effects on shuttle embroidery-machines the construction and principle of working are generally the same. The perforators are in most cases arranged beneath the needle-gage and in some constructions also above the same. The perforating apparatus may be mounted on the embroidering-machine before or behind the plane of the material and may be moved dependently or independently of the needlebar. In any case, however, the embroiderymachine must be put out of action as regards the formation of stitches when the perforators are to work. The material-frame must then be shifted, corresponding to the distance between the needles and the perforator, to such an extent that the latter can penetrate the of the thread-feed arises-that is to say, such an amount of thread must be drawn off the thread-bobbins and out of the shuttle as is necessary for allowing the embroidery-frame to move freely for the perforating, and in thestitching around of the perforated holes, which then follows, the thread drawn out does not work under tension and produces loose places in the goods. WVith this feed of thread the perforating consumes a deal of time and in many cases requires precisely as much time as the actual embroidery.

This invention has for its object to entirely remove the above-mentioned drawbacks as regards loss of production by the perforating and thread-feeding and also the production of defective goods produced by the latter by the work of perforating being carried on simultaneously with the operation of the actual embroidering-that is, as desired during the formation of the stitches -without its being necessary to stop. the embroidery-machine or the formation of stitches and Without a special adjustment of the material for the perforator being necessary. For this object the perforator is given such a position as regards the needles that the perforator-point in the working position of the perforator is in immediate proximity to the axis of the needle.

The object of the invention is shown as an example in the accompanying drawings, in which Figures 1 and 2 are fragmentary views of an embroidering-machine, showing in side elevation and plan, respectively, a needle and perforator arranged side by side. Figs. 3 and 4. are fragmentary views showing the perforator arranged at different angles relatively to the needle. Fig. 5 is a plan View, and Fig. 6 a section on line 0041:, Fig. 4. Fig. 7 is a fragmentary side elevation of an embroidering-rnachine,illustrating mechanism for operating the upper and lower series of perforators. Fig. .9, a plan of Fig. 8, showing a slight modification in the construction of certain parts of the mechanism shown in Fig. 7.

In Figs. 1 and 2 the perforatorb is screwed into a bare at the side of the needle a, in close proximity thereto, which bar is moved by means of guides cl. It is consequently evident that the perforator can operate without interfering with the needle embroidering. The'perforator bis here formed as a tapering pyramid one edge of which runs parallel to the needle.

In Fig. 3 the perforatorb may stand at any suitable angle to the needle a, but always close to the same. It may be operated in such a way that it penetrates in front of the needle to a given depth into the materialfand rapidly again withdraws, so that the needle can unimpededly carry out its stitch.

In the form of construction shown in Figs. 4 to 7 perforators of grooved or cross-shaped section are shown, which allow of the perforator I) being arranged as close as possible to the needle ct and being capable of working without aifecting the formation of the stitch.

Fig. 7 shows a preferable form of construc- Fig. 8 is a detail side elevation; and

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tion of a device for moving the perforator. A grooved cam-disk h is firmly mounted on the main shaft 1 of the machine, with which disk the rolleri engages, whereby a lever 7c is moved, said lever being pivotally attached by means of a bolt Z to the frame of the machine; One arm of the lever 70 is formed as a slide, along which a link-bar n is guided on a slide-piece m. The said rod acts in combination with a lever 0, transverse shaft q,

. leverp, and a connecting-sleeve on the guidebars d of the perforator-bar c. The forward and backward movement of the perforator I) must thus take place by the rotation of the disk h. In order to insure that this perforator movement shall each time correspond with the desired size of hole, an adjusting or setting lever r r is mounted on the machine-frame, a stud t on said lever engaging in a slot u in the link-bar at. If the lever r r be placed against a contact-piece 1 of a sector L",fiX8(l to the machine-frame, the slide-piece on will lie in the central point Z of the slidelever is, and thus the perforator-bar is stationary, while the lever itself moves. If, however, the setting-lever r r be adjusted against the contact-piece 2, the slide-piece m moves correspondingly outward in the slide of the lever It. By this means the perforatorbar 0 is moved against the material by the lever is more or less, according as the lever r r is adjusted more or less toward the stops 2 or 1. It remains thus each time at the option of the embroiderer to stop the perforating device each time during the stitching or to allow it to penetrate the material more or less deeply corresponding to the adjustment of the lever r r.

The levers w and s, in conjunction with a link-bar connecting them, serve for transmitting the movement to the lower rowof perforators. The case will very frequently arise in which in order to carry out several perforating operations following one another at intervals the perforator must always penetrate the material to an equal depth. In this case the working of the arrangement described for moving the perforator is simpler and more rational if the throwing in and out of action of the perforator movement can take place without altering the adjustment for the depth of the perforation. For this objectthe roller t',

Figs. 8 and 9, of the grooved cam-disk h may be adj ustably arranged in the side of the lever 7.2. Then the perforating apparatus is to work, the roller 2' is engaged in the groove of the disk h by means of a suitable arrangement. In this case, for instance, a shaft m,

with a lever which engages on the pin of the roller 11, is provided. If the perforating apparatus is to be thrown out of action, the roller e is withdrawn from the groove of the cam-disk h and its pin then enters a hole in a fixing-iron .e,attached to the machine-frame, in order to fix the apparatus in its normal position. Of course the throwing out of action of the perforator-bar movement and its regulation may be obtained by other known'mechanical means.

What I claim isz 1. In an embroidering-machine, the combination with a reciprocating needle and a perforator of increasing diameter from its point to its heel arranged to reciprocate with its longitudinal face parallel with and in close proximity to the path of said needle and means for reciprocating the perforator, for the purpose set forth.

2. In an embroidering-machine, the combination witha needle and a perforator of increasing diameter from its point to its heel and groovedlongitudinally from or approximately from point to heel, said perforator arranged to reciprocate with its longitudinal face parallel with and proximate to the path of the needle and means for reciprocating the perforator, for the purpose set forth.

- 3. In an embroidering-machine, the combination with a needle and a comparativelylong perforator of increasing diameter from its point to its heel, said perforator arranged to reciprocate with its longitudinal face parallel with and proximate to the path of the needle; of mechanism for varying the ampli tude of the reciprocations of said perforator independently of the needle, for the purpose 'set forth.

In witness whereof I have hereunto set my hand in presence of two witnesses.

MORRIS SGHOENFELD.

WVitnesses:

HANS KOLLER, J AKOB ABDERHALDEN. 

